package com.liu.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {

    //正常访问
    public String paymentInfo(Integer id){
        return "线程池："+Thread.currentThread().getName()+" paymentInfo_OK,id："+id+"\t"+"哈哈哈";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_timeOutHandler",commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value="3000")
    })
    public String paymentInfo_timeOut(Integer id){

        try{
            TimeUnit.SECONDS.sleep(1);
        }catch (Exception e){
            e.printStackTrace();
        }
        return "线程池："+Thread.currentThread().getName()+" paymentInfo_Timeout,id："+id+"\t"+"哈哈哈"+"耗时3秒";
    }

    public String paymentInfo_timeOutHandler(Integer id){
        return "线程池："+Thread.currentThread().getName()+" paymentInfo_timeOutHandler,id："+id+"\t"+"哈哈哈"+"错误了";
    }

    //===========服务熔断

    @HystrixCommand(fallbackMethod ="paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name="circuitBreaker.enabled",value ="true"),//是否开启断路器
            @HystrixProperty(name="circuitBreaker.requestVolumeThreshold",value ="10"),//請求次數，发送请求的次数
            @HystrixProperty(name="circuitBreaker.sleepWindowInMilliseconds",value ="10000"),//時間窗口期，在一定时间内发送的请求次数
            @HystrixProperty(name="circuitBreaker.errorThresholdPercentage",value ="60"),//請求錯誤次數閾值百分比，发送的请求错误的占比
            })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id)
    {
        if(id < 0)
        {
        throw new RuntimeException("******id 不能负数");
         }
         String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName()+"\t"+"调用成功，流水号: " + serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id)
    {
        return "id 不能负数，请稍后再试，/(ㄒoㄒ)/~~   id: " +id;
    }

}
